On Mon, Aug 29, 2011 at 10:45 AM, Travis Parks <jehugalea...@gmail.com> wrote:
> I wanted to allow for calls like this:
>
> extend(range(0, 1000)).map(lambda x: x * x).where(lambda x: x % 2 ==
> 0).first(lambda x: x % 7 == 0)
>
> It allows me to compose method calls similarly to LINQ in C#. I think
> this looks better than:
>
> first(where(map(range(0, 1000), lambda x: x * x, lambda x: x % 2 == 0,
> lambda x : x % 7 == 0)))
FWIW, I would be inclined to write that in Python like this:
def first(iterable):
try:
return next(iter(iterable))
except StopIteration:
raise ValueError("iterable was empty")
squares = (x * x for x in range(0, 1000))
first(x for x in squares if x % 14 == 0)
It does a bit too much to comfortably be a one-liner no matter which
way you write it, so I split it into two.
Cheers,
Ian
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